Assuming you have an Eaton-Fuller twin countershaft transmission, you need to get under the truck and remove the access plate (if it's still there). I don't remember offhand the socket size for that, but I do believe it's ASE (with the fleet for the company I work for, most trucks don't have the access plate).
The adjustment bolt.. you'll see it.. it's the only five sided bolt on the pressure plate, and it'll be between two round rivets. If you don't see it right away, you'll have to bump the starter (or have a buddy do it for you while you observe to see when it's positioned right). Once it's in position, then you have to depress the clutch.. if you have someone to do it, they can depress it... I usually use Blue Point hood prop rod for this (Harbor Freight, O'Reilly Auto Parts, Auto Zone, Advanced Auto Parts, Pep Boys.. they all sell something similar.. it's just a telescoping rod which you can lock into position).. adjusting the clutch, you need a 5/8" socket.. you can use a 3/8" or 1/2" drive ratchet for this... doesn't really matter, so long as you can reach.. I usually use my 1/2" drive, because it has a longer handle, and my 3/8" sockets have the button on the back to release the socket, and they get in the way... you get the ratchet onto that bolt, then you take a prybar and push on the back of the socket.. once the bolt pushes inward, you can adjust the clutch.. clockwise (marked as "on" with some ratchet brands) increases your pedal free play.. counterclockwise (marked as "off" on some ratchet brands) decreases pedal free play. At the end of it, you should have at least 1-1/2" of free play in the clutch pedal, and a 1/2" gap behind the throwout bearing.. if you have the 1/2" gap behind the throwout bearing and you either have less than 1-1/2" or more than 2-1/2" of free play in the clutch, then you'll need to adjust the linkage.
This is universal for all Eaton-Fuller twin-countershaft transmissions, whether it's a synch box or an unsynchronized transmission. And the same holds true whether it's a linkage clutch or whether it has a hydraulic clutch (e.g., Volvos, the Kenworth T680, etc.). In the case of the hydraulic clutches, the pedal free play is self-adjusting, although you'll still have to ensure that you have the 1/2" gap behind the throwout bearing (which, by the way, you can measure with a 1/2" socket extension... no need to buy the measuring forks).
Rockwell transmissions should be more the same, although the socket sizes might vary with those.
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∙ 2014-04-29 05:18:53Yes. A Class 7 single axle straight truck exceeds the 26000 lb. GVWR. A semi truck is a Class 8 truck.
Gross Vehicle Weight Rating. A Class 6 truck has a GVWR of 19,001 -26,000 lbs. A Class 7 truck has a GVWR of 26,001 - 33,000 lbs. A Class 8 truck has a GVWR in excess of 33,000 lbs.
"Semi truck" has become common usage for a Class 7 or 8 truck driver pulling a trailer which is mounted by a fifth wheel, but can be applied to any truck pulling a trailer which is fifth wheel mounted.
They can be any size... they could be a freezer box on the back of a 1/4 ton pickup chassis up to a step van on a Class 7 truck chassis... they even have pushcarts they sell ice cream out of.
In North America, the primary manufacturer's of Class 8 trucks are Daimler A.G. (parent company of Freightliner and Western Star), Volvo A.B. (parent company of Volvo Trucks and Mack), Navistar (International), and PACCAR, Inc. (parent company of Peterbilt and Kenworth). Additionally, those manufacturers offer trucks in classes 5, 6, and 7, as well. Other class 5, 6, and 7 manufacturers and marketers include Ford, General Motors/Isuzu (via Chevrolet, GMC, and Isuzu... often badge engineering the other's products), Dodge (the Ram 5500 is a Class 5 truck, and was also sold as the Sterling Bullet until 2009), UD-Nissan Diesel, Hino... in the past, all the major auto manufacturers had a heavy truck division.. Dodge bowed out in the late 1970s, and, having been purchased by Daimler A.G., it made it pointless for them to try reestablishing it... Daimler is also the parent company of Freightliner, Western Star (from 1997 onwards) and Sterling (from 1997 to 2009.. Sterling was what used to be Ford's heavy truck division)... General Motors got out of it in the late 1980s, and put more effort into a joint venture with Volvo A.B. (Volvo trucks rebadged under the White-GMC name).. Ford sold their heavy truck division in 1997. The difference is weight rating. A Class 8 truck is a truck with a weight rating in excess of 33,000 lbs. GVWR. A Class 7 truck has a GVWR from 26,001 to 33,000 lbs.... Class 7 and 8 are heavy duty trucks, and require a CDL in the US if not operated under specific exemptions (military vehicles, emergency vehicles, farm vehicles, recreational vehicles... all under certain conditions). A Class 6 truck has a GVWR from from 19,510 to 26,000 lbs. A Class 5 truck has a GVWR from 16,001 to 19,000 lbs. Classes 4, 5, and 6 are medium duty.. anything with a GVWR of 16,000 lbs. or less is light duty.
You don't adjust the clutch brake itself - that gets replaced. If you're trying to adjust the clutch itself, see the related question "how do you adjust a clutch on a Class 7 or 8 truck"... I've spelled it out there already
A Class 7 truck has a Gross Vehicle Weight Rating of 26,001 to 33,000 lbs.
you don't adjust it. It is a Hydraulic clutch unit. you have to bleed it. There is a 7/16" bleeder valve on the transmission. clay Colorado
Truck classification isn't concurrent with the license required to drive them. A single axle water truck could be a Class 5, 6, 7, or 8 truck, depending on the vehicle GVWR. A Class 7 or Class 8 truck would require a (minimum) Class B CDL.
Yes. A Class 7 single axle straight truck exceeds the 26000 lb. GVWR. A semi truck is a Class 8 truck.
Gross Vehicle Weight Rating. A Class 6 truck has a GVWR of 19,001 -26,000 lbs. A Class 7 truck has a GVWR of 26,001 - 33,000 lbs. A Class 8 truck has a GVWR in excess of 33,000 lbs.
Peterbilt, Kenworth, Frieghtliner, Volvo, & Mack
The top 5 truck manufacturers for class 6, 7, and 8 trucks are Peterbilt, International, Freightliner, Mack, and Kenworth. Freightliner, founded in 1942, is the largest truck manufacturer in North America.
Class B isn't a category of truck - it's a type of licence needed to operate a heavy duty truck not towing a trailer in excess of 10,000 lbs. Those would be Class 7 (GVWR of 26,001 to 33,000 lbs) and Class 8 (GVWR in excess of 33,000 lbs.) trucks. Penske and Ryder Truck Rental both lease these classes of truck.
Most school buses on a Class 6 or Class 7 truck chassis will run 22.5s.
That depends upon the frame size and the number of tires. if you look on maufacturers plate on inside of door, u will see what the gvw is that is if it is 1.5 ton truck the gvw will be 3000 pounds [more than the tare weight] so you can go grom there. the side of the truck will say what class it is a Ford f450 or GMC or dodge 4500 is a class 4 truck a Ford F250 dodge or GMC 2500 is a class 2 truck a GMC 6500 or Ford F650 is a class 6 truck. class 7 & 8 truck require a CDL to drive * Class 1 (gvw 0-6,000) * Class 2 (gvw 6,001-10,000) * Class 3 (gvw 10,001-14,000) * Class 4 (gvw 14,001-16,000) yes it is * Class 5 (gvw 16,001-19,500) * Class 6 (gvw 19,501-26,000) * Class 7 (gvw 26,001-33,000) * Class 8 (gvw 33,001-150,000)
Depends. You can drive up to a Class 6 truck (up to 26,000 lbs. GVWR) without a CDL. Class 7 or Class 8 trucks require a CDL.